Carry everything for a day at the office or an 8 hour flight with the Timbuk2 Alchemist Messenger Bag. Timbuk2 designed this messenger with tarpaulin fabric for durability and water shedding when it's drizzling, and it is TSA friendly so you can grab your laptop without taking the bag off your shoulders. A padded laptop sleeve accommodates devices up to 15 inches, and features crater holes for air circulation. The fully adjustable shoulder strap with an airmesh foam shoulder pad keeps things comfortable while you're riding your bike, and lets you loosen it up when you're navigating airport terminals. The custom aluminum hooks allow easy and quiet access into the main compartment, and the daisy chain webbing across the flap and side let you attach carabiners, helmets, and newspapers while you're on the go.